SNANA: A Public Software Package for Supernova Analysis

TL;DR

SNANA is a versatile, community-driven software package for supernova light curve analysis, enabling cosmological measurements, survey optimization, and model comparisons with a flexible, extensible architecture.

Contribution

It introduces a comprehensive, adaptable software suite for supernova analysis that integrates multiple models and is designed for continual community-driven improvements.

Findings

Used by multiple collaborations for robust supernova analysis

Supports various supernova models with consistent features

Facilitates detailed model comparisons and survey optimization

Abstract

We describe a general analysis package for supernova (SN) light curves, called SNANA, that contains a simulation, light curve fitter, and cosmology fitter. The software is designed with the primary goal of using SNe Ia as distance indicators for the determination of cosmological parameters, but it can also be used to study efficiencies for analyses of SN rates, estimate contamination from non-Ia SNe, and optimize future surveys. Several SN models are available within the same software architecture, allowing technical features such as K-corrections to be consistently used among multiple models, and thus making it easier to make detailed comparisons between models. New and improved light-curve models can be easily added. The software works with arbitrary surveys and telescopes and has already been used by several collaborations, leading to more robust and easy-to-use code. This software is not intended as a final product release, but rather it is designed to undergo continual improvements from the community as more is learned about SNe. Below we give an overview of the SNANA capabilities, as well as some of its limitations. Interested users can find software downloads and more detailed information from the manuals at http://www.sdss.org/supernova/SNANA.html .